* Offtopic question: is it valid to pass a rust reference into assembly as if it was a pointer?

it compiles, and it "seems to" work. But I seem to recall hearing that there was more to it.
```rust
pub fn syscall_get_time(time : &mut u64) {
	unsafe {
		core::arch::asm!("
			mov r12,{addr}
			svc #123
		", addr=in(reg) time, clobber_abi("C"));
	}
}
```